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Grade 7 Wave Speed, Frequency & Wavelength Worksheet with Answers

Grade 7 (US) · Year 8 (UK) · Class 7 (India) · Science

Unit 7: Going FurtherAdvanced: Grade 8–9 PreviewNGSS MS-PS4-1Advanced

Using v = f × λ to find wave speed, frequency and wavelength. This free middle school worksheet has 16 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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Wave Speed, Frequency & Wavelength

Grade 7 · Science

Score___ / 16

Name

Class

Date

Learning goal: Advanced: Grade 8–9 Preview · NGSS MS-PS4-1

Directions: This worksheet has 2 parts. Read the instructions at the start of each part.

Example

A wave has a frequency of 29 Hz and a wavelength of 7 m. What is its speed? (v = fλ)

Answer: 203 m/s

Part A

Label the diagram. Use the words in the box.

Word bank

amplitudewavelengthcresttrough
1234
  1. 1
  2. 2
  3. 3
  4. 4
Part B

Answer each question. Use full sentences where you can.

  1. 5

    A wave has a frequency of 42 Hz and a wavelength of 4 m. What is its speed? (v = fλ)

    λ = 4 mf = 42 Hzv = ?v = f × λ
  2. 6

    A wave travels at 306 m/s with a wavelength of 17 m. What is its frequency?

    λ = 17 mf = ?v = 306 m/sv = f × λ
  3. 7

    A wave travels at 210 m/s with a wavelength of 7 m. What is its frequency?

    λ = 7 mf = ?v = 210 m/sv = f × λ
  4. 8

    A wave has a frequency of 19 Hz and a wavelength of 19 m. What is its speed? (v = fλ)

    λ = 19 mf = 19 Hzv = ?v = f × λ
  5. 9

    A wave has a frequency of 6 Hz and a wavelength of 6 m. What is its speed? (v = fλ)

    λ = 6 mf = 6 Hzv = ?v = f × λ
  6. 10

    A wave travels at 36 m/s with a frequency of 36 Hz. What is its wavelength?

    λ = ?f = 36 Hzv = 36 m/sv = f × λ
  7. 11

    A wave travels at 220 m/s with a frequency of 11 Hz. What is its wavelength?

    λ = ?f = 11 Hzv = 220 m/sv = f × λ
  8. 12

    A wave has a frequency of 39 Hz and a wavelength of 16 m. What is its speed? (v = fλ)

    λ = 16 mf = 39 Hzv = ?v = f × λ
  9. 13

    A wave has a frequency of 34 Hz and a wavelength of 10 m. What is its speed? (v = fλ)

    λ = 10 mf = 34 Hzv = ?v = f × λ
  10. 14

    A wave has a frequency of 19 Hz and a wavelength of 14 m. What is its speed? (v = fλ)

    λ = 14 mf = 19 Hzv = ?v = f × λ
  11. 15

    A wave travels at 688 m/s with a wavelength of 16 m. What is its frequency?

    λ = 16 mf = ?v = 688 m/sv = f × λ
  12. 16

    A wave travels at 88 m/s with a wavelength of 11 m. What is its frequency?

    λ = 11 mf = ?v = 88 m/sv = f × λ

★ Challenge corner for fast finishers

You are in a closed room with a candle, a match and a lamp. What do you light first?

How did I do?

Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/science/7/wave_equation

Answer key (click to show)
  1. 1.crest
  2. 2.trough
  3. 3.wavelength
  4. 4.amplitude
  5. 5.168 m/s
  6. 6.18 Hz
  7. 7.30 Hz
  8. 8.361 m/s
  9. 9.36 m/s
  10. 10.1 m
  11. 11.20 m
  12. 12.624 m/s
  13. 13.340 m/s
  14. 14.266 m/s
  15. 15.43 Hz
  16. 16.8 Hz
  17. ★the match (challenge corner)

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